Sr. Data Visualization Developer - Contractor

Job DescriptionThe Data and Analytics Unit at Department of Mental Health (DMH) is seeking a dynamic individual to serve in a contracted role as Sr. Data Visualization Developer. This contract position reports to the Director of Business Intelligence in the Data and Analytics Unit. This role supports the Department in providing analytic and technical skills necessary to innovate, build, and maintain an ever-growing data viz portfolio for DMH.The Sr. Data Visualization Developer applies various research methods to mine, collect, examine, analyze, validate, and organize data to derive insights and present information to support decision-making. This incumbent will also collaborate with the Information Technology Department and the DMH Privacy Office to support the development of the data visualization portfolio ensuring adherence to laws, regulations, and policies.In this role you will be our primary architect for visual storytelling, responsible for designing, developing and deploying enterprise level dashboards. The ideal candidate is a Tableau power user with a deep understanding of data modeling and possesses the versatility to manage and migrate environments in Power BI. The person in this role will be designing the visual interface through which our leadership understands the health of the business. In this role you will work in a collaborative and supportive environment. Our agency is focused on meeting the mental health needs of the clients that we serve, and data and analytics is at the core of the service delivery to improve health outcomes.Please Note: This position is not characterized as "Specialized Training" for STEM OPT students.Duties and Responsibilities (these are a general summary and not all inclusive):Lead the end-to-end design and development of complex multisource dashboards that are intuitive, performant and scalable.Serve as the subject matter expert for both Tableau and Power BI advising on the best tool for specific use cases and assisting in cross-platform integration of migrations.Work closely with data engineers to define requirements for data layers (SQL, Snowflake) ensuring data structures are optimized for visualization performance.Apply advanced data visualization theory (Gestalt principles, Tufte's ink-to-data ration) to create clean, professional and accessible user interfaces.Audit existing workbooks and reports to improve load times, stream calculated fields and optimize LOD expressions and DAX queries.Establish best practices for data visualization standards, support the maintenance of the Tableau and Power BI online environments, and mentor junior analysts.Preferred Qualifications:5+ years of professional experience with Tableau desktop/server/cloud.Proficiency in advanced features (LOD expressions, sets, parameters, data blending, Tableau Prep, and Row-level security)Power BI proficiency 2+ years including a strong understanding of DAX, Power Query (M), and the Power BI online service environment.Advanced SQL skills, writing complex joints, CTEs and stored procedures.Experience with data warehousing solutions like Snowflake, Azure and SQL.Knowledge of scripting languages like Python or R for advanced data preparation and statistical analysis.Analytical mindset. Proven ability to translate business requirements into clear technical visualization specs.Experience with UI/UX design tools.Tableau or Power BI certifications are a plus.Knowledge of data governance, data quality management concepts and metadata management tools.Having a portfolio of previous work available for review is a plus.Period of Service: 4/14/2026 - 4/14/2027. Contracts are renewable, subject to the Department approval, performance and allocation of funds.Additional Information:Benefits are unavailable with the exception of sick leave accruals.Contracts are renewable, subject to the Department approval, performance and allocation of funds.All employees will be paid on a biweekly basis and must have direct deposit.DMH Mission Statement:The Department of Mental Health assures and provides access to services and supports to meet the mental health needs of individuals of all ages, enabling them to live, work and participate in their communities. The Department establishes standards to ensure effective and culturally competent care to promote recovery. The Department sets policy, promotes self-determination, protects human rights and supports mental health training and research.Pre-Hire Process:A criminal background check will be completed on the recommended candidate as required by the regulations set forth by the Executive Office of Health and Human Services prior to the candidate being hired. For more information, please visit http://www.mass.gov/hhs/coriEducation, licensure and certifications will be verified in accordance with the Human Resources Division's Hiring Guidelines.Education and license/certification information provided by the selected candidate(s) is subject to the Massachusetts Public Re